216772699 has 16 divisors (see below), whose sum is σ = 260888544. Its totient is φ = 177465600.

The previous prime is 216772681. The next prime is 216772783. The reversal of 216772699 is 996277612.

It is not a de Polignac number, because 216772699 - 2⁷ = 216772571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216772649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12624 + ... + 24349.

It is an arithmetic number, because the mean of its divisors is an integer number (16305534).

Almost surely, 2^216772699 is an apocalyptic number.

216772699 is a deficient number, since it is larger than the sum of its proper divisors (44115845).

216772699 is a wasteful number, since it uses less digits than its factorization.

216772699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37038.

The product of its digits is 571536, while the sum is 49.

The square root of 216772699 is about 14723.2027426100. The cubic root of 216772699 is about 600.7146105853.

The spelling of 216772699 in words is "two hundred sixteen million, seven hundred seventy-two thousand, six hundred ninety-nine".